Mitsubishi Servo Encoder OSA104

Mitsubishi OSA104 Encoder – High-Accuracy Servo Feedback Encoder

The Mitsubishi OSA104 Encoder is a high-precision multi-turn absolute rotary encoder designed for robust position and speed feedback in advanced motion control systems. Developed by Mitsubishi Electric Corporation, the OSA104 is widely used with Mitsubishi servo motors and industrial automation equipment, delivering reliable and accurate feedback essential for closed-loop control.

This encoder provides absolute position data across multiple revolutions with excellent resolution and repeatability. Its design ensures total position tracking even after power loss, which significantly improves startup performance and eliminates the need for homing procedures in complex automated systems.

Key Features

• Multi-Turn Absolute Position Feedback – Provides both single-turn and multi-turn positional information, preserving total shaft position count even after power interruptions.

• High Resolution – Typical configurations combine high resolution for precise angular detection over wide motion ranges.

• Serial Output Interface – Delivers positional data via robust serial communication (e.g., SSI or proprietary Mitsubishi protocol) for reliable noise-immune signal transmission.

• Optical Sensing Technology – Advanced optical feedback provides stable signal quality and high measurement fidelity.

• Industrial-Grade Build – Designed for long-term use in harsh production environments.

Technical Highlights

• Encoder Type: Multi-turn absolute rotary encoder (optical)

• Resolution: Typically high-bit resolution (e.g., 17-bit single-turn + 12-bit multi-turn)

• Output Format: Synchronous serial (SSI) or Mitsubishi proprietary serial protocol

• Mounting: Direct mount to servo motor shaft

• Integration: Designed for Mitsubishi Electric servo systems and motion controllers

Applications

The Mitsubishi OSA104 encoder is ideal for use in systems that demand highly accurate positional control and reliable absolute feedback:

• CNC machining centers and multi-axis tool systems

• Industrial robotics and articulated motion platforms

• Automated storage and retrieval systems (AS/RS)

• Gantry and long-travel linear motion assemblies

• Precision process control machinery in packaging, printing, and textile systems

Benefits

• Eliminates Homing Cycles: Absolute data retention reduces machine startup time.

• Improved Precision: High resolution ensures tight control over motion and positioning.

• Reliable in Harsh Conditions: Built for industrial reliability and longevity.